--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/platform/graphics/svg/cg/CgSupport.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2005 Apple Computer, Inc.  All rights reserved.
+ *               2006 Rob Buis <buis@kde.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+
+#include "config.h"
+#if ENABLE(SVG)
+#include <ApplicationServices/ApplicationServices.h>
+#include "CgSupport.h"
+
+#include "FloatConversion.h"
+#include "GraphicsContext.h"
+#include "KCanvasRenderingStyle.h"
+#include "RenderStyle.h"
+#include "SVGRenderStyle.h"
+#include <wtf/Assertions.h>
+
+namespace WebCore {
+
+CFStringRef CFStringFromCGAffineTransform(CGAffineTransform t)
+{
+    return CFStringCreateWithFormat(0, 0, CFSTR("a: %f b: %f c: %f d: %f tx: %f ty: %f"), t.a, t.b, t.c, t.d, t.tx, t.ty);
+}
+
+CGAffineTransform CGAffineTransformMakeMapBetweenRects(CGRect source, CGRect dest)
+{
+    CGAffineTransform transform = CGAffineTransformMakeTranslation(dest.origin.x - source.origin.x, dest.origin.y - source.origin.y);
+    transform = CGAffineTransformScale(transform, dest.size.width/source.size.width, dest.size.height/source.size.height);
+    return transform;
+}
+
+void applyStrokeStyleToContext(CGContextRef context, RenderStyle* style, const RenderObject* object)
+{
+    /* Shouldn't all these be in the stroke painter? */
+    CGContextSetLineWidth(context, narrowPrecisionToCGFloat(KSVGPainterFactory::cssPrimitiveToLength(object, style->svgStyle()->strokeWidth(), 1.0)));
+
+    CGContextSetLineCap(context, CGLineCapFromKC(style->svgStyle()->capStyle()));
+    CGContextSetLineJoin(context, CGLineJoinFromKC(style->svgStyle()->joinStyle()));
+
+    CGContextSetMiterLimit(context, style->svgStyle()->strokeMiterLimit());
+
+    const KCDashArray& dashes = KSVGPainterFactory::dashArrayFromRenderingStyle(style);
+    double dashOffset = KSVGPainterFactory::cssPrimitiveToLength(object, style->svgStyle()->strokeDashOffset(), 0.0);
+
+    CGContextSetLineDash(context, narrowPrecisionToCGFloat(dashOffset), dashes.data(), dashes.size());
+}
+
+CGContextRef scratchContext()
+{
+    static CGContextRef scratch = 0;
+    if (!scratch) {
+        CFMutableDataRef empty = CFDataCreateMutable(NULL, 0);
+        CGDataConsumerRef consumer = CGDataConsumerCreateWithCFData(empty);
+        scratch = CGPDFContextCreate(consumer, NULL, NULL);
+        CGDataConsumerRelease(consumer);
+        CFRelease(empty);
+
+        CGFloat black[4] = {0, 0, 0, 1};
+        CGContextSetFillColor(scratch, black);
+        CGContextSetStrokeColor(scratch, black);
+     }
+    return scratch;
+}
+
+FloatRect strokeBoundingBox(const Path& path, RenderStyle* style, const RenderObject* object)
+ {
+    // the bbox might grow if the path is stroked.
+    // and CGPathGetBoundingBox doesn't support that, so we'll have
+    // to make an alternative call...
+ 
+    // FIXME: since this is mainly used to decide what to repaint,
+    // perhaps it would be sufficien to just outset the fill bbox by
+    // the stroke width - that should be way cheaper and simpler than
+    // what we do here.
+ 
+    CGPathRef cgPath = path.platformPath();
+
+    CGContextRef context = scratchContext();
+    CGContextSaveGState(context);
+
+    CGContextBeginPath(context);
+    CGContextAddPath(context, cgPath);
+    applyStrokeStyleToContext(context, style, object);
+    CGContextReplacePathWithStrokedPath(context);
+    CGRect box = CGContextGetPathBoundingBox(context);
+        
+    CGContextRestoreGState(context);
+
+    return FloatRect(box);
+}
+
+}
+
+#endif // ENABLE(SVG)
+